The diameter of a rubidium atom is . We will consider two different ways of placing the
Chapter 14, Problem 2.84(choose chapter or problem)
The diameter of a rubidium atom is . We will consider two different ways of placing the atoms on a surface. In arrangement A,all the atoms are lined up with one another to form a square grid. Arrangement B is called a close-packed arrangement because the atoms sit in the depressions formed by the previous row of atoms:(a)Using arrangement A,how many Rb atoms could be placed on a square surface that is 1.0 cm on a side? (b) How many Rb atoms could be placed on a square surface that is 1.0 cm on a side,using arrangement B? (c) By what factor has the number of atoms on the surface increased in going to arrangement B from arrangement A? If extended to three dimensions, which arrangement would lead to a greater density for Rb metal?
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